Dosimetric Comparison of Superficial X-Rays and a Custom HDR Surface Applicator for the Treatment of Superficial Cancers

Dosimetric Comparison of Superficial X-Rays and a Custom HDR Surface Applicator for the Treatment of Superficial Cancers

Bibliographic Details
Main Author: Merz, Brandon A.
Language:English
Published: University of Toledo Health Science Campus / OhioLINK 2008
Subjects:
Oncology
HDR
orthovoltage
custom applicator
filter
superficial
flattening filter
Online Access:http://rave.ohiolink.edu/etdc/view?acc_num=mco1221066740
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spelling ndltd-OhioLink-oai-etd.ohiolink.edu-mco12210667402021-08-03T05:38:54Z Dosimetric Comparison of Superficial X-Rays and a Custom HDR Surface Applicator for the Treatment of Superficial Cancers Merz, Brandon A. Oncology HDR orthovoltage custom applicator filter superficial flattening filter The purpose of this study was to design and characterize a custom HDR applicator for the treatment of cancers in the region 0-5 mm, comparing it to the dosimetric properties of the MaximaR-100 superficial x-ray unit. The superficial machine was characterized in terms of percent depth dose, beam profiles, and dose rate and similar measurements were taken for the copper HDR applicator. The applicator alone had an unacceptably large dose inhomogeneity across the beam so a primary filter, modified filter, and secondary lead collimator were designed and manufactured to help shape the dose into a profile similar to the superficial applicator. Beam flatness and width were nearly replicated but beam divergence was more pronounced for the HDR applicators. Percent depth dose measurements for the HDR applicator showed a dose fall-off nearly identical to superficial x-rays rather than the assumed inverse square dose fall-off. 2008-11-12 English text University of Toledo Health Science Campus / OhioLINK http://rave.ohiolink.edu/etdc/view?acc_num=mco1221066740 http://rave.ohiolink.edu/etdc/view?acc_num=mco1221066740 unrestricted This thesis or dissertation is protected by copyright: all rights reserved. It may not be copied or redistributed beyond the terms of applicable copyright laws.
collection NDLTD
language English
sources NDLTD
topic Oncology
HDR
orthovoltage
custom applicator
filter
superficial
flattening filter
spellingShingle Oncology
HDR
orthovoltage
custom applicator
filter
superficial
flattening filter
Merz, Brandon A.
Dosimetric Comparison of Superficial X-Rays and a Custom HDR Surface Applicator for the Treatment of Superficial Cancers
author Merz, Brandon A.
author_facet Merz, Brandon A.
author_sort Merz, Brandon A.
title Dosimetric Comparison of Superficial X-Rays and a Custom HDR Surface Applicator for the Treatment of Superficial Cancers
title_short Dosimetric Comparison of Superficial X-Rays and a Custom HDR Surface Applicator for the Treatment of Superficial Cancers
title_full Dosimetric Comparison of Superficial X-Rays and a Custom HDR Surface Applicator for the Treatment of Superficial Cancers
title_fullStr Dosimetric Comparison of Superficial X-Rays and a Custom HDR Surface Applicator for the Treatment of Superficial Cancers
title_full_unstemmed Dosimetric Comparison of Superficial X-Rays and a Custom HDR Surface Applicator for the Treatment of Superficial Cancers
title_sort dosimetric comparison of superficial x-rays and a custom hdr surface applicator for the treatment of superficial cancers
publisher University of Toledo Health Science Campus / OhioLINK
publishDate 2008
url http://rave.ohiolink.edu/etdc/view?acc_num=mco1221066740
work_keys_str_mv AT merzbrandona dosimetriccomparisonofsuperficialxraysandacustomhdrsurfaceapplicatorforthetreatmentofsuperficialcancers
_version_ 1719422966881583104

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